Pump-governor.



COPY

No. 843,382. PATENTED FEB. 5, 19.07.

I G. E. WITT PUMP GOVERNOR.

APPLICATION FILED YEB.23,190-

GEORGE E. \YllT, OF SAY F-Rr-XXCISCO, CALIFORNIA.

PUMP-GOVERNOR.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed February 23,1906. Serial No. 302.635.

7']; (rd/- It'll/I'll] if 7I'IIII/II/ calm/er:

Be it known that l, Gnonon E. Wrr'r, a

' citizen of the United States, residing at San Francisco, in the county of San Flzllfl'iclm and State of Calil 'ornia, have invent d certain new and useful Improvements in lump- Governors; and I do hereby declare the following to be a full, clear, and exact dt'scription of the same, such as will enable others skilled in the art to which it appertains to make and use the same. i

Bridlystatcd, I term my presentinvention a pump-governor; but to be more explicit it is a device whereby the pressure from a uni iin a aratus is retained at redetermined fixed point. This predetermined print can be fixed at Wlll, and the operationof the devlcc 1n relation to the pressure from the "pump and the motive power thereof is auto- 2 is a transverse matic.

The various parts are so arranged 'as to be readily assembled, not liable to dwaugement,

and positive and auton'iatic in their action,

and a uniform deliwry-pressure is insured.

The device possesses all the requisivs of strength and durability and isespcciallysimple in construction and etlici nt in operation.

Myinvention more particularly resides in the novel combii'iation, construction, and arrangement of parts, all as more particularly described, and set forth in the appended claims.

I am enabled to accomplish the objects of my invention by the means illustrated in the accompanying drawings, in which-- Figure 1 is a central vertical section and partial, elevation oi the com plete d v ice. Fig. eetion on the line a; 9: ol' Fig. 1 Fig. 3 is a similar view on the line. 1 1 oi Fig. 1.

Referring now to the above views by letter,

A represents a metal diaphragm securely held across the chamber l5,, formed by the two members (I and l), the former member being connected to the l"livery-pressure of the pump by'means ol' the pipe F, while the latter is formed with the central threadcd hub F. Engaging with the threads of the hub F is the cylindrical n ck (l, the upper extremity of which terminatcs in the yoke ll. To the upp'r end of the yoke II is secured the housing Vl which contains th regrindable balance valve .l, u and I: indicat ing the two ports.

Bearingng-iind thediaphragm A andwithin the chamber B is the disk K, which is connected to the valve l by means of the stem l1.

llneircling the em L and within the neck G is the spiral, sp mg M, one end of which bears against th disk K, while its opposite end engag-s with the cap X, the latter being set ng-irint the'adjustablc screw-plug O. The valve J is swivelly connected to the stem IJ.

Now from the description so hn gone into it will be readilyseen that as the delivery- {)ITCSSUI'O from the pump is brought to bear on the under side ol' the diaphragm A the spring U will be correspondingly compressed and the valve J respond thermvith and regulate the steam to the pump. The direction of the steam is indicated by means ol the arrow in Fig. 1. Now should it be desired to regulate the device so that the valve J would respond to a higher (lelivery-m'essure the screw-plug O is set up and the spring M compressed. On the other hand, by easing up on the plug 0 the pressure of the spring will'be reduced and the valve consequently respond to a lower drlivery-pressure. Should it be dcsired to regulate the valve-stem so that the disk K and diaphragm A are in the desired relative positions,-all that is necessary is to loosen the small set-screw P and adjust the members and l) by turning either to the right hand or to the left hand. Tightening the set-screw P will hold the parts in the adjusted position. Access to the valve J can be had'hy removing the plug Q.

It will be readily seen from the foregoing description that 1 have provided a very simple device by the use of which a uniform delivery-';' ressurc is auton'iatieally maintained regardless of the variation in the steam-pressure, and the many advantages of this possib'lidy will be apparent to those familiar with the operation of pumps generally.

I have described the best form of construction now use'i by me; still it will be, understood that I intend to cover mechanical equivalents when such are substituted.

Having thus fully described myinvcntion, what I claim, and desire to secure by Letters Patent, is-

1. A device of the character described comprising a casing having a chamber with a diaphragm extending across it, means connecting the chamber at one side of said diapbfagm with the pressurc-delivery of a pump,

an extension of said casing having an upper portion enlarged to form a yoke said extension being aljustably tilted to the cas'ng, a compression-sprng in said extension and exerting a pressure upon the diaphragm in optension of the casing a'ljustably fitted thereto position to the pressure-delivery of the uinp, a screw accessible through said yoke or adjusting the tension of said spring, a valvestem, a plate bearing against the diaphragm and having the valve-stem fixed to it, said stem being slidable through the spring and adjusting-screw, a casing titted to the yoke end of the extension having steamassage through it, and a valve carried by said stem and controlling said stea1n-passage 2. In a device of the character described, the combination of a divided casing forming an internal chamber and. a diaphragm between the parts of said casing and dividing said chamber, said diaphragm having a valve-stem fixed to it, one of the parts of the casing having a projecting hub, a tubular exand means for locking said extension in its adjusted position, a casing having steam inlet and outlet passages and con11ectingporls, a valve carried by the stem and controlling said ports, a spring in the tubular extension and acting upon the diaphragm in opposition to the pressure:lclivery of the pump, and means for adjusting the tension of the spring.

3. In a device of the character described,

the combination of a two-part casing mclosing a chamber, one of said parts connecting with the pressure-delivery ot a pump and the other part having a central threaded hub, a diaphragm extending across said chamber and dividing the same, a cylindrical neck having one end adjustably fitted to said hub and the opposite end provided with an open yoke, a spring Within said neck between the yoke and diaphragm and acting upon the latter, a valve-stem and a member carried thereby and bearing upon the diaphragm said stem extending through the neck and yoke, a casing fixed to the yoke and having a steam-passage, a valve carried by said stem and controlling said steam-passage,- a cap Within the neck and seating upon the spring, and an adjusting-screw bearing upon the cap and accessible through the open yoke whereby the tension of the spring may be adjusted.

In testimony whereof I have hereunto set my name to this specification in the presence of two subscribing witnesses.

GEORGE E. VVITT. /Vitn'esses:

(7. O. DANGBERG, M. O. CONNOR. 

